#ifndef _WIRING_CONSTANTS_
#define _WIRING_CONSTANTS_

#include <stdbool.h>
#include <stdint.h>

#ifdef __cplusplus
  #include <algorithm>
  using std::min;
  using std::max;
#else // C
  #include <stdlib.h>
  #ifndef abs
    #define abs(x) ((x)>0?(x):-(x))
  #endif // abs

  #ifndef min
    #define min(a,b) ((a)<(b)?(a):(b))
  #endif // min

  #ifndef max
    #define max(a,b) ((a)>(b)?(a):(b))
  #endif // max

#endif // __cplusplus

/* Official Arduino */
#define INPUT               0x0
#define OUTPUT              0x1
#define INPUT_PULLUP        0x2
/* GD32V extension */
#define INPUT_FLOATING      INPUT
#define INPUT_PULLDOWN      0x3
#define INPUT_ANALOG        0x4
#define OUTPUT_OPEN_DRAIN   0x5

#define PI                  3.1415926535897932384626433832795
#define HALF_PI             1.5707963267948966192313216916398
#define TWO_PI              6.283185307179586476925286766559
#define DEG_TO_RAD          0.017453292519943295769236907684886
#define RAD_TO_DEG          57.295779513082320876798154814105
#define EULER               2.718281828459045235360287471352

#define SERIAL              0x0
#define DISPLAY             0x1

enum BitOrder {
  LSBFIRST = 0,
  MSBFIRST = 1
};

#define LOW                 0x0
#define HIGH                0x1
#define CHANGE              EXTI_TRIG_BOTH
#define FALLING             EXTI_TRIG_FALLING
#define RISING              EXTI_TRIG_RISING

#define DEFAULT             1
#define EXTERNAL            0

#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))

#define radians(deg)        ((deg)*DEG_TO_RAD)
#define degrees(rad)        ((rad)*RAD_TO_DEG)
#define sq(x)               ((x)*(x))

#define interrupts()        __enable_irq()
#define noInterrupts()      __disable_irq()

#define lowByte(w)          ((uint8_t) ((w) & 0xff))
#define highByte(w)         ((uint8_t) ((w) >> 8))

#define bitRead(value, bit)              (((value) >> (bit)) & 0x01)
#define bitSet(value, bit)               ((value) |= (1UL << (bit)))
#define bitClear(value, bit)             ((value) &= ~(1UL << (bit)))
#define bitWrite(value, bit, bitvalue)   (bitvalue ? bitSet(value, bit) : bitClear(value, bit))

#define bit(b) (1UL << (b))
//macro added for compatibility
#ifndef _BV
  #define _BV(bit) (1 << (bit))
#endif
#ifndef cbi
  #define cbi(reg, bitmask) *reg &= ~bitmask
#endif
#ifndef sbi
  #define sbi(reg, bitmask) *reg |= bitmask
#endif

typedef unsigned int word;

typedef bool boolean __attribute__((deprecated));

typedef uint8_t byte ;

#endif /* _WIRING_CONSTANTS_ */
